Dual wavelength waveplate is widely used on Third Harmonic Gener ation (THG) system. When you need a NLO crystal for type II SHG (o+e – e) and a NLO crystal for type II THG (o+e – e), the out put polarization from SHG can not be used for THG. So you must to turn the polarization to get two perpendicular polarization. Dual wavelength waveplate works like a polarization, it can rotate the polarization of one beam and keep another beam’s polarization.| ◆ Single plate ◆ DBAR Coating ◆ Type II SHG + Type II THG ◆ Type II SHG + Type I THG ◆ Type I SHG + Type I THG |
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| Diameter | φ10 | φ12.7 | φ15 | φ20 | φ25.4 |
| Part No. | WPD1610 | WPD1612 | WPD1615 | WPD1620 | WPD1625 |
| Material: | Optical grade Crystal Quartz |
| Dimension Tolerance: | +0.0,-0.2mm |
| Wavefront Distortion: | l/8@633nm |
| Retardation Tolerance: | l/100 |
| Surface Quality: | 20/10 Scratch and Dig |
| AR Coating: | R<0.2% at center wavelength |
| Standard wavelength: | l @1064nm + l /2@532nm l/2@1064nm + l@532nm |